Material indirect detection device and conveying roller way

The utility model discloses a material indirect detection device, a first end of an action transmission block extends to a material moving path, when a material contacts with the first end of the action transmission block, the action transmission block is pushed to move, and a second end is far away from the material moving path; a proximity switch is arranged on the side of the motion path of the second end of the motion transmission block and overlaps with the path of the second end, the detection direction of the proximity switch is perpendicular to the motion path of the motion transmission block, and when materials drive the motion transmission block to move, the motion transmission block is detected by the proximity switch. The proximity switch does not directly detect the moving material, but uses the action transmission block as a middle transmission structure, the action transmission block is pushed to move regardless of the bending degree of the material, and the shape and the motion path of the act